The Synthetic Aperture Radar (SAR), on board the Seasat-A satellite, provides an all-weather imaging capability which should prove useful in a number of remote sensing applications.

Impact force is an important dimension for percussive musical instruments such as the piano. We explore three possible mechanisms how to get impact forces on mobile multi-touch devices: using built-in accelerometers, the pressure sensing capability of Android phones, and external force sensing resistors. We find that accelerometers are difficult to control for this purpose. Android's pressure s...

In order to realize an autonomous nuclear power plant, the sensing system performing daily inspection inside of the plant is indispensable. For the sensing system, reliability and exibility are demanded to cope with risky and complicated environments. In order to build such sensing system, we have been emphasizing the importance of cooperation and active control of various sensing functions, an...

The ability to sense Earth's magnetic field has evolved in various taxa. However, despite great efforts to find the 'magnetic-sensor' in vertebrates, the results of these scientific efforts remain inconclusive. A few decades ago, it was found that bacteria, known as magnetotactic bacteria (MTB), can move along a magnetic field using nanometric chain-like structures. Still, it is not fully clear...

It is well known that the successful operation of cognitive radio (CR) between CR transmitter and CR receiver (CR link) relies on reliable spectrum sensing. To network CRs requires more information from spectrum sensing beyond traditional techniques, executing at CR transmitter and further information regarding the spectrum availability at CR receiver. Redefining the spectrum sensing along with...

Cognitive Radios is emerging in research laboratories as a promising wireless paradigm, which will integrate benefits of software defined radio with the capability of awareness of the spectrum environment. To reach this goal many issues remain still open and many functions must still be implemented in a efficienct way. One of the main functions is spectrum sensing, which is the capability to se...

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